<script setup>
import PageContainer from "@/components/AdminConponents/PageContainer.vue";
import { ref } from 'vue'
import { Plus, Upload } from '@element-plus/icons-vue'
// 基于store的数据，初始化imgUrl的初始值
import { useAdminStore} from "@/stores/index.js";
import {updateAvatarAPI} from "@/api/AdminApi/admin.js";
import 'element-plus/theme-chalk/el-message.css'
import { ElMessage } from "element-plus"

const adminStore = useAdminStore();
const imageUrl = ref(adminStore.adminInfo.avatar)
const uploadRef = ref()

const onSelectFile = (uploadFile) => {
  // 基于 FileReader 读取图片做预览
  const reader = new FileReader()
  reader.readAsDataURL(uploadFile.raw)
  reader.onload = () => {
    imageUrl.value = reader.result
  }
}

const onUpdateAvatar = async () => {
  // 发送请求更新头像
  const res = await updateAvatarAPI(imageUrl.value)
  if (res.code === 1) {
    // userStore 重新渲染
    await adminStore.getAdminInfo()
    // 提示用户
    ElMessage.success('头像更新成功')
  } else {
    ElMessage.error(res.msg)
  }

}
</script>

<template>
  <page-container title="更换头像">
    <el-upload
        ref="uploadRef"
        :auto-upload="false"
        class="avatar-uploader"
        :show-file-list="false"
        :on-change="onSelectFile">
      <img v-if="imageUrl" :src="imageUrl" class="avatar" alt="" />
      <el-icon v-else class="avatar-uploader-icon"><Plus /></el-icon>
    </el-upload>

    <br />
    <el-button
        @click="uploadRef.$el.querySelector('input').click()"
        type="primary"
        :icon="Plus"
        size="large">
      选择图片
    </el-button>
    <el-button
        @click="onUpdateAvatar"
        type="success"
        :icon="Upload"
        size="large">
      上传头像
    </el-button>
  </page-container>
</template>

<style scoped lang="scss">
.avatar-uploader {
  :deep {
    .avatar {
      width: 278px;
      height: 278px;
      display: block;
    }
    .el-upload {
      border: 1px dashed var(--el-border-color);
      border-radius: 6px;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: var(--el-transition-duration-fast);
    }
    .el-upload:hover {
      border-color: var(--el-color-primary);
    }
    .el-icon.avatar-uploader-icon {
      font-size: 28px;
      color: #8c939d;
      width: 278px;
      height: 278px;
      text-align: center;
    }
  }
}
</style>
